What is Line?
Show Hint
- Distance between three dots
- Distance between two dots
- Straight line
- None of these
The Correct Option is C
Solution and Explanation
Step 1: Understanding the definition of a line
A line is a geometric figure that extends in both directions infinitely and has no endpoints.
It is typically defined as the path traced by a moving point in a single direction.
Step 2: What is the minimum number of points to define a line?
A line can be defined using any two points.
Once we have two points, a straight line can be drawn connecting them.
Step 3: Evaluating the options
(A) Distance between three dots $\Rightarrow$ A curve can pass through three points; not necessarily a line.
(B) Distance between two dots $\Rightarrow$ This defines a line segment, not an infinite line.
(C) Straight line $\Rightarrow$ This is the correct conceptual and geometric definition.
(D) None of these $\Rightarrow$ Incorrect, as (C) is correct.
\[
\boxed{\text{Correct Answer: (C) Straight line}}
\]
Top Questions on Lines
- The line \( x = 1 + 5\mu, y = -5 + \mu, z = -6 - 3\mu \) passes through which of the following points?
- Find a unit vector in the direction of \( \overrightarrow{DA} \).
- If the lines \[ \frac{x - 1}{-3} = \frac{y - 2}{2k} = \frac{z - 3}{2} \] and \[ \frac{x - 1}{3k} = \frac{y - 1}{1} = \frac{z - 6}{-7} \] are perpendicular to each other, find the value of \( k \) and hence write the vector equation of a line perpendicular to these two lines passing through the point \( (3, -4, 7) \).
- Find the distance between the line \[ \frac{x}{2} = \frac{2}{y - 6} = \frac{1}{-z - 1} \] and another line parallel to it passing through the point \( (4, 0, -5) \).
- The lines \[ \frac{1 - x}{2} = \frac{y - 1}{3} = \frac{z}{1} \] and \[ \frac{2x - 3}{2p} = \frac{y - 1}{1} = \frac{z - 4}{7} \] are perpendicular to each other for \( p \) equal to:
Questions Asked in UP Board X exam
- Colour origin from
- UP Board X - 2025
- Light and Colour
- How many national political parties are there in India?
- UP Board X - 2025
- Parties and the Party Systems in India
- Prime factorisation of 156 will be:
- UP Board X - 2025
- Number System
- (i) Food chain
(ii) Growth hormone in human.- UP Board X - 2025
- Food Chains and Energy Flow
- A lemon placed in a beaker full of water appears larger than its real size, when viewed sideways. The light phenomenon responsible is -
- UP Board X - 2025
- Refraction of Light